This is an R Markdown document. Markdown is a simple formatting syntax for authoring web pages (click the MD toolbar button for help on Markdown).
When you click the Knit HTML button a web page will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:
summary(cars)
## speed dist
## Min. : 4.0 Min. : 2
## 1st Qu.:12.0 1st Qu.: 26
## Median :15.0 Median : 36
## Mean :15.4 Mean : 43
## 3rd Qu.:19.0 3rd Qu.: 56
## Max. :25.0 Max. :120
Chunks are important. Without them, my journal will look like junk!
You can also embed plots, for example:
plot(cars)
Your R-Journal should be a list of function or techniques that you've used to complete labs and in class assignments. It will be useful to include worked examples in code. I have inserted an entry for a simple function (mean()).
Once you get the hand of markdown you should delete this line and all preceeding text.
mean(someData):This function computes the mean of a R object. It computes:
\[ \bar{x} = \frac{\sum_{i=1}^N x_i}{N} \]
The equation above is an example of latex math, a widely use, and convient way to write equations. I'm not looking forward to LaTeX math.
An example of using the function mean():
## Create a small dataset to demonstrate the use of mean()
someData <- c(1, 3, 5, 7, 9)
## Compute the mean of the object someData
mean(someData)
## [1] 5
hash tags are cool…